part of part of in lateral side of connects connects skeletal joint bony pelvis ilium sacro-iliac joint SCTID:182199004 articulatio sacro-iliaca MESH:D012446 The joint in the bony pelvis between the sacrum and the ilium of the pelvis, which are joined by strong ligaments. Wikipedia:Sacroiliac_joint NCIT:C33507 GAID:268 sacroiliac joint MA:0001506 EMAPA:19300 FMA:21440 UBERON:0001365 pelvic region of trunk fused sacrum synovial joint of pelvic girdle lateral structure